Study on strength property of fabric under low-stress condition

摘要

A testing method for tensile under low-stress condition based on the characterization system of the handle properties of fabrics and yarns (CHS-FY) was introduced. The CHS-FY system measured weight, bending, as well as frictional and tensile behaviour by one pulling-out test. In addition, it characterized the tactile handle of fabrics and yarns. This article analyses tensile measurement of fabrics based on CHS-FY. The theoretical analysis and modeling to tensile were performed by structural analysis, and the corresponding formulae of tensile elastic constants (E1 and E2) before and after friction force involved were obtained. In addition, the tensile indexes were obtained through pulling-out force and distance curve in the CHS-FY tensile step, which include slope, work, linearity, and extension of tensile between sample and the surface of three-point beam structure. Comparisons and correlations of tensile indexes for theoretical and experimental results were conducted. Correlation coefficients between tensile elastic constants (E1 and E2) and (E3) measured by CHS-FY and KES-FB1 were found to be 0.857 and 0.870, respectively. The comparison of theoretical and experimental results indicate that the theoretical modeling of tensile is effective and accurate in measuring tensile indexes and the CHS-FY system can be utilized for characterizing the tensile properties of fabrics.